| Acronym | Meaning |
| SSP | Space Shuttle Program |
| CMM | Condition Monitored Maintenance |
| GETIL | Ground Elapsed Time Of Landing (for TIG Of |
| DIAGN | Diagnose |
| SIS | SiMUlator Interface SYstem (SubsYstem) |
| ETC | Earth Terrain Camera |
| IT | Installation Test |
| CSE | Computer Support Equipment |
| LIMRC | LRU Identification And Maintenance Requirements Catal |
| I | ECO Inboard Engine Cutoff |